Luminescent and Robust Perovskite–Silicone Elastomers Prepared by Light Induced Thiol–Ene Reaction. Issue 5 (3rd December 2020)

• Record Type: Journal Article
• Authors: Guo, Mengdong; Huang, Yue; Cao, Jinfeng; Xu, Yunfan; Lu, Shilong; Feng, Shengyu
• Other Names: Brook Michael A. guestEditor.; Skov Anne L. guestEditor.
• Is Part Of: Macromolecular rapid communications. Volume 42:Issue 5(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-12-03
• Subjects: light induced cross‐linking -- luminescent elastomer -- perovskite nanocrystal -- silicone material -- thiol–ene reaction; Macromolecules -- Periodicals; Polymers -- Periodicals; Chemistry -- Periodicals; 547.705
• DOI: 10.1002/marc.202000606
• Languages: English
• ISSNs: 1022-1336

Abstract

Abstract: The preparation of a series of luminescent perovskite–silicone elastomer (PSE) composites by embedding inorganic lead halide perovskite nanocrystals (CsPbBr3 NCs) into networks constructed by trimethylolpropane tris(2‐mercaptoacetate) and sulfone‐containing silicone copolymers with vinyl side groups (PSMVS) is reported herein. The networks are obtained by an environmentally friendly thiol–ene cross‐linking reaction under 30 W household LED light. The conducted analysis shows that the prepared PSEs display strong green fluorescence due to encapsulation of CsPbBr3 NCs, which constitute a luminescent center in sulfone‐containing silicone networks. Using PSMVS as basic polymers instead of commercial polysiloxanes endows PSEs with enhanced mechanical strength and excellent luminescent stability at high temperatures. The PSEs show robust tensile stress and >650% elongation. Additionally, the construction of colorful ultraviolet light‐emitting diodes (UV‐LEDs) by an in situ cross‐linking process is described. Abstract : The preparation of a series of luminescent perovskite–silicone elastomers by embedding inorganic lead halide perovskite nanocrystals into silicone networks is reported herein. The silicone elastomers are fabricated by an environmentally friendly visible‐light induced thiol–ene cross‐linking reaction. Using sulfone‐containing silicone copolymers as the basic polymers endows the materials with enhanced mechanical strength and excellent luminescent stability.